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The perimeter of an isosceles triangle is 16cm the lengths of the sides are (x+3)(this is the length of the opposite side as well) and (x+4). Determine the value of x .

Write out all the information you have into one single equation, you know that the perimeter is the sum of the lengths of the sides of the triangle so write out the information as follows. x+3 + x+3 + x+4=16...
EA
Answered by Eve A. • Maths tutor
6386 Views

Differentiate y = x sin(x)

The question is asking to differentiate which means find dy/dx. If we think about the differentiation rules we know about, we see that we should use the product rule as y is a product (multiplication) of two...
NT
Answered by Nathan T. • Maths tutor
7534 Views

If y=5x+4x^3, find dy/dx.

When asked to find dy/dx, this means to differentiate. Differentiation is also a method of calculating the gradient of a line. (dy/dx = gradient.) The rule of differentiation is as follows: Step 1 : Differen...
UH
Answered by Umair H. • Maths tutor
4633 Views

How would you solve the simultaneous equations 2x + y = 7 and 3x - y = 8

To solve a pair of simultaneous equations you need to find the values of x and y which are the same for both equations. To do this you should eliminate one of the unknowns - in this instance it can easily be...
KH
Answered by Kenna H. • Maths tutor
4224 Views

If an equation of a line is y=2x+4 and it crosses the x axis at point R, what is the value of x?

Since we know that the line crosses the x axis, we can assume that the value of Y at this point is 0. So we must substitute y = 0 into the equation y = 2x + 40 = 2x + 4we now have to isolate x on its own so ...
AC
Answered by Abigail C. • Maths tutor
3916 Views